Michael fitzgerald



M. FITZGERALD.

GOREBOX.

Patented Dec. 4, 1888.

UNITED STATES PATENT ()EEICE.

MICHAEL FITZGERALD, OF CUMBERLAND,JIARYLAND, ASSIGNOR TO ROBERT C.PAI'L, SR., OF SAME PLACE.

BOX.

SPECIFICATION forming part of Letters Patent No. 394,108, dated December4, 1888.

Application filed January 31, 1888. Serial No. 262,582. (Model) T0 allwhom it may concern:

lie it known that I, hIICHAEL FITZGERALD, a citizen of the UnitedStates, residing at! Cumberland, in the county of Alleghany and State ofMaryland, have invented a new and useful Improvement in Core-Boxes forMold- 'ing Car-Yheels, of which the following a 1 specification.

The object of my invention is to facilitate the molding ot' a series ofcores for car-wheels j which have an oil-box surrounding the hub on theexterior side when the oil-box has a greater dian'leter than the hub ofthe wheel, and extends some distance over the arms.

Referring to the accompanying drawings, 1 Figure 1 is a plan view of thecore-box with the core-sumiorting ring lying in the notched 1 arms. Fig.2 is a section on the line a; a, Fig. 1. Fig. is a perspective view ofthe sand cores, one of the cores being broken away to show thesupporting-rm The core-box is made as deep as the width of the arms ofthe wheel to be made require, its interior diameter being large enoughto 1 mold cores of proper size to fit the central part of the mold whenthe pattern is drawn. I

It is provided with the hub A and arms B, the arms in number and sizecorresponding to the size and shape of the hub of the wheel. Aboutmidway between the center and circumference of the box notches E are cutin all the arms to about half their depth, for receiving a metal ring,C, which is let down in the arms to the bottom of the notches, thedimensions of the ring bein about three-eighths by threeeighths inch.'When the ring is in this position, the compartments D between the armsare packed with sand, which surrounds the ring C and forms the cores G.hen the cores G are removed from the box, they are held by the ring 0 inthe proper position to be set in the mold, where they are also firmlyheld by it when the metal is poured. \Y hen the wheels are cast, thering can be broken from the arms.

\Vhat I claim is- A core-box having the hub A and notched arms E, incombination with the ring C, substantially as set forth.

MICHAEL FITZGERALD.

\Vit n esses:

G. H. MOKEEHAX, I. C. LAMBERT.

